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Side-by-side financial comparison of Atara Biotherapeutics, Inc. (ATRA) and SemiLEDs Corp (LEDS). Click either name above to swap in a different company.

SemiLEDs Corp is the larger business by last-quarter revenue ($2.6M vs $1.6M, roughly 1.6× Atara Biotherapeutics, Inc.). On growth, SemiLEDs Corp posted the faster year-over-year revenue change (103.7% vs -95.1%). Over the past eight quarters, SemiLEDs Corp's revenue compounded faster (70.3% CAGR vs -75.9%).

Atara Biotherapeutics, Inc. is a clinical-stage biotechnology company focused on developing allogeneic T-cell immunotherapies for patients with unmet medical needs across oncology, autoimmune disease, and infectious disease indications. It operates primarily in North America, Europe, and Asia-Pacific, partnering with research institutions to advance its novel treatment pipeline.

SEMI is an industry association comprising companies involved in the electronics design and manufacturing supply chain. They provide equipment, materials and services for the manufacture of semiconductors, photovoltaic panels, LED and flat panel displays, micro-electromechanical systems (MEMS), printed and flexible electronics, and related micro and nano-technologies.

ATRA vs LEDS — Head-to-Head

Bigger by revenue
LEDS
LEDS
1.6× larger
LEDS
$2.6M
$1.6M
ATRA
Growing faster (revenue YoY)
LEDS
LEDS
+198.9% gap
LEDS
103.7%
-95.1%
ATRA
Faster 2-yr revenue CAGR
LEDS
LEDS
Annualised
LEDS
70.3%
-75.9%
ATRA

Income Statement — Q4 FY2025 vs Q1 FY2026

Metric
ATRA
ATRA
LEDS
LEDS
Revenue
$1.6M
$2.6M
Net Profit
$-742.0K
Gross Margin
0.7%
Operating Margin
-39.4%
Net Margin
-28.9%
Revenue YoY
-95.1%
103.7%
Net Profit YoY
73.2%
-35.6%
EPS (diluted)
$-0.09

Green = leading value per metric. Periods may differ when fiscal calendars don't align.

8-Quarter Revenue & Profit Trend

Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.

Revenue
ATRA
ATRA
LEDS
LEDS
Q4 25
$1.6M
$2.6M
Q3 25
$3.5M
$13.2M
Q2 25
$17.6M
$17.7M
Q1 25
$98.1M
$10.9M
Q4 24
$32.8M
$1.3M
Q3 24
$40.2M
$1.3M
Q2 24
$28.6M
$1.3M
Q1 24
$27.4M
$886.0K
Net Profit
ATRA
ATRA
LEDS
LEDS
Q4 25
$-742.0K
Q3 25
$-4.3M
$-1.2M
Q2 25
$2.4M
$223.0K
Q1 25
$38.0M
$388.0K
Q4 24
$-12.7M
$-547.0K
Q3 24
$-21.9M
Q2 24
$-19.0M
$-319.0K
Q1 24
$-31.8M
$-559.0K
Gross Margin
ATRA
ATRA
LEDS
LEDS
Q4 25
0.7%
Q3 25
1.7%
Q2 25
5.3%
Q1 25
9.2%
Q4 24
20.6%
Q3 24
11.6%
Q2 24
41.0%
Q1 24
12.6%
Operating Margin
ATRA
ATRA
LEDS
LEDS
Q4 25
-39.4%
Q3 25
-103.5%
-9.0%
Q2 25
18.2%
-0.4%
Q1 25
39.5%
1.0%
Q4 24
-37.3%
-52.1%
Q3 24
-54.1%
Q2 24
-63.7%
-35.8%
Q1 24
-114.2%
-93.9%
Net Margin
ATRA
ATRA
LEDS
LEDS
Q4 25
-28.9%
Q3 25
-124.6%
-9.0%
Q2 25
13.6%
1.3%
Q1 25
38.7%
3.6%
Q4 24
-38.8%
-43.4%
Q3 24
-54.5%
Q2 24
-66.5%
-24.1%
Q1 24
-116.1%
-63.1%
EPS (diluted)
ATRA
ATRA
LEDS
LEDS
Q4 25
$-0.09
Q3 25
$-0.32
$-0.15
Q2 25
$0.19
$0.03
Q1 25
$3.50
$0.05
Q4 24
$0.27
$-0.08
Q3 24
$-2.93
Q2 24
$-3.10
$-0.04
Q1 24
$-5.65
$-0.11

Balance Sheet & Financial Strength

Snapshot of each company's liquidity, leverage and book value from the latest quarter.

Metric
ATRA
ATRA
LEDS
LEDS
Cash + ST InvestmentsLiquidity on hand
$8.5M
$2.9M
Total DebtLower is stronger
Stockholders' EquityBook value
$-38.5M
$2.1M
Total Assets
$20.2M
$14.2M
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ATRA
ATRA
LEDS
LEDS
Q4 25
$8.5M
$2.9M
Q3 25
$13.7M
$2.6M
Q2 25
$22.3M
$2.4M
Q1 25
$13.8M
$2.4M
Q4 24
$42.5M
$1.2M
Q3 24
$67.2M
$1.7M
Q2 24
$35.3M
$1.7M
Q1 24
$46.2M
$1.6M
Total Debt
ATRA
ATRA
LEDS
LEDS
Q4 25
Q3 25
$1.7M
Q2 25
Q1 25
Q4 24
Q3 24
$3.7M
Q2 24
Q1 24
Stockholders' Equity
ATRA
ATRA
LEDS
LEDS
Q4 25
$-38.5M
$2.1M
Q3 25
$-36.6M
$2.8M
Q2 25
$-35.0M
$4.0M
Q1 25
$-55.1M
$3.6M
Q4 24
$-97.3M
$1.6M
Q3 24
$-90.5M
$2.2M
Q2 24
$-110.9M
$2.7M
Q1 24
$-98.3M
$3.0M
Total Assets
ATRA
ATRA
LEDS
LEDS
Q4 25
$20.2M
$14.2M
Q3 25
$30.2M
$15.6M
Q2 25
$36.9M
$23.2M
Q1 25
$62.0M
$23.2M
Q4 24
$109.1M
$10.4M
Q3 24
$142.7M
$11.1M
Q2 24
$117.3M
$11.5M
Q1 24
$165.3M
$12.0M
Debt / Equity
ATRA
ATRA
LEDS
LEDS
Q4 25
Q3 25
0.61×
Q2 25
Q1 25
Q4 24
Q3 24
1.69×
Q2 24
Q1 24

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.

Metric
ATRA
ATRA
LEDS
LEDS
Operating Cash FlowLast quarter
$-50.9M
$361.0K
Free Cash FlowOCF − Capex
$331.0K
FCF MarginFCF / Revenue
12.9%
Capex IntensityCapex / Revenue
0.0%
1.2%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ATRA
ATRA
LEDS
LEDS
Q4 25
$-50.9M
$361.0K
Q3 25
$-9.8M
Q2 25
$-7.3M
$693.0K
Q1 25
$-28.1M
$1.4M
Q4 24
$-24.5M
$-158.0K
Q3 24
$-4.0M
Q2 24
$-10.6M
$109.0K
Q1 24
$-29.6M
$-600.0K
Free Cash Flow
ATRA
ATRA
LEDS
LEDS
Q4 25
$331.0K
Q3 25
Q2 25
$383.0K
Q1 25
$1.3M
Q4 24
$-24.6M
$-276.0K
Q3 24
Q2 24
$-10.7M
$98.0K
Q1 24
$-29.7M
$-619.0K
FCF Margin
ATRA
ATRA
LEDS
LEDS
Q4 25
12.9%
Q3 25
Q2 25
2.2%
Q1 25
11.8%
Q4 24
-75.0%
-21.9%
Q3 24
Q2 24
-37.3%
7.4%
Q1 24
-108.7%
-69.9%
Capex Intensity
ATRA
ATRA
LEDS
LEDS
Q4 25
0.0%
1.2%
Q3 25
0.0%
0.2%
Q2 25
0.0%
1.8%
Q1 25
0.0%
1.1%
Q4 24
0.3%
9.4%
Q3 24
0.0%
9.3%
Q2 24
0.1%
0.8%
Q1 24
0.5%
2.1%
Cash Conversion
ATRA
ATRA
LEDS
LEDS
Q4 25
Q3 25
Q2 25
-3.07×
3.11×
Q1 25
-0.74×
3.62×
Q4 24
Q3 24
Q2 24
Q1 24

Financial Flow Comparison

Revenue → gross profit → operating profit → net profit for each company.

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